CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit
Balance beginning of period (in shares) at Dec. 31, 2019		112,703,926
Balance, beginning of period at Dec. 31, 2019	$ 34,398	$ 113	$ 147,231	$ (10,806)	$ (102,140)
Treasury stock, beginning balance (in shares) at Dec. 31, 2019				1,885,277
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Series B Convertible Preferred Stock	32,954		32,954
Deemed dividends	(32,028)		(32,028)
Shares repurchased for tax withholding (in shares)				435,492
Shares repurchased for tax withholding	(2,334)			$ (2,334)
Share-based compensation expense	15,733		15,733
Exercise of stock options (in shares)				(359,328)
Exercise of stock options	411		(3,180)	$ 3,591
Issuance of restricted stock (in shares)				613,146
Issuance of restricted stock	0		(5,463)	$ 5,463
Restricted stock shares canceled/forfeited	0		3,363	$ (3,363)
Restricted stock cancellation/forfeited (in shares)				425,388
Net loss	(49,284)				(49,284)
Balance end of period (in shares) at Dec. 31, 2020		112,703,926
Balance, end of period at Dec. 31, 2020	(150)	$ 113	158,610	$ (7,449)	(151,424)
Treasury stock, ending balance (in shares) at Dec. 31, 2020				1,773,683
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividends	(926)		(926)
Shares repurchased for tax withholding (in shares)				469,239
Shares repurchased for tax withholding	(4,751)			$ (4,751)
Share-based compensation expense	14,757		14,757
Exercise of stock options (in shares)				(487,361)
Exercise of stock options	1,437		(1,199)	$ 2,636
Issuance of restricted stock (in shares)				810,405
Issuance of restricted stock	0		(4,053)	$ 4,053
Restricted stock shares canceled/forfeited	0		515	$ (515)
Restricted stock cancellation/forfeited (in shares)				73,056
Other	0		(2,009)	$ 2,009
Other (in shares)				(239,502)
Net loss	$ (10,285)				(10,285)
Balance end of period (in shares) at Dec. 31, 2021	112,703,926	112,703,926
Balance, end of period at Dec. 31, 2021	$ 82	$ 113	165,695	$ (4,017)	(161,709)
Treasury stock, ending balance (in shares) at Dec. 31, 2021	778,710			778,710
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased for tax withholding (in shares)				249,442
Shares repurchased for tax withholding	$ (1,190)			$ (1,190)
Share-based compensation expense	$ 12,666		12,666
Exercise of stock options (in shares)	(312,001)	(160,762)		(151,239)
Exercise of stock options	$ 651		(618)	$ 1,269
Issuance of restricted stock (in shares)		840,759		882,251
Issuance of restricted stock	0	$ 1	(3,969)	$ 3,968
Restricted stock shares canceled/forfeited	0		30	$ (30)
Restricted stock cancellation/forfeited (in shares)				5,338
Net loss	$ (30,197)				(30,197)
Balance end of period (in shares) at Dec. 31, 2022	113,705,447	113,705,447
Balance, end of period at Dec. 31, 2022	$ (17,988)	$ 114	$ 173,804	$ 0	$ (191,906)
Treasury stock, ending balance (in shares) at Dec. 31, 2022	0			0